Concrete pipe making machine



Dec. 11, 1934. c, QU|NN ET AL 1,983,775

CONCRETE PI PE' MAKING MACHINE Filed Decp9, 1929 2 Sheets-Sheet l Dec. 11, 1934. c, 'NN ET AL 1,983,775

CONCRETE PIPE MAKING MACHINE Filed Dec. 9, 1929 2 Sheets-Sheet '2' Patented Dec. 11, 1934 'fUNITED :s'm'res CONCRETE PIPE MAKINGfMACI-IINE :Charles 0. Quinn and Harley i'z;Edgerton,::Boone, Iowa, :assignors to Quinn "Wirez'dti Iron Works, Boone, Iowa, a corporation-of Iowa Application December 9,1929; Serial No': 412,803

' 12 Claims.

This invention relates to improvements inthat .type of machines for making cement pipaand particularlyto that type employing avertical. and rotatively and slidably mounted packer; shaft,

having at its: lower end a packer head and-core -member .arranged to be moved longitudinally through a tileform, as the tile. is formed therein.

The object of our invention is to provide in a machine of the class above describedvimproved means for supporting, elevating and lowering'the packer shaft, whereby said" shaftewillebe-islidingly supported against lateral movement,v and whereby lifting power maybe applied to the-shaft in such manner that anytendency toward swinging either end of the shaft laterally will be practically eliminated, and any frictional-loss caused by said swinging action will-be eliminated.

A further object of our invention is. to ,provideimproved means for imparting rotary movement-to the shaft-whereby friction andwwear caused by the longitudinal movementof theshaft relative to the meansfor rotating the be greatly reduced.

A further object is to provide means whereby the sliding. speedofgsaid shaft .may'bevaried relative to its rotatingjspeed.

Our invention consists in the construction, ar-

. rangernent and combination ofthe various parts shaft will of the device, whereby the objects contemplated are attained, as hereinafter more fully setforth,

pointed outin our claims, and illustrated-in the accompanying drawings, in which:

Figure 1 is a side elevation of atile making-machine embodying our improvements, thefmechanism for elevating, lowering. and rotating .;the packer shaft being shownin section, and aportion of thetile formbeing broken away.

Figure Z'is a .detail sectional .view takenton the ..line.. 22. .of Figure 1.

Figure 3 is a-detailsectional iviewrtaken entire 1 line 3-3. of Figure l.

Figure l is a front elevation of the upper end the pipe machine, the upper end of whichsupports an auxiliary frame member 11 comprising -a pair of parallel and spaced side members 12. One end of said side members projects forwardly beyond the front of the frame 10. Each-forwardly projecting portion. 13 is designed-to support an upright frame member 14.

The upper ends of the frame members 14* are provided with what we shall term an upper bearging block 15, having spaced bearings 16 in which ;.is rotatively mounteda shaft; 17. ;-.Each end: of

nthesshaft. 17-..is provided with. a -spro.cket wheel .18. Theblockl5 is providedwith a bearing 19 'forgrotatively receiving theupper end of aver- ..ticallvarranged tubularv shaft 20. .The lower end oflsaid vtubulanshaft 201s rotatively mounted .in. a block. 21.. fixed totheside members 13. The

lower. .end. of the. tubular shaft 20. is mounted in vthe hubof. a.,-.bevel-,gear.22= rotatively mounted inthe block 21,by-suitablebearings.23. The bevel gearx22 is driven by means of a pinion 24 mounted on the outer end of a horizontally arranged'shaft 25.rotatively.mounted insuitable bearings 26 and .Z'hsecured tothe-frame members 12. The inner :end-oftheshaft; .is providedwith. a sprocket .18; driven. by. a .chain v29 through .the sprocket 30 mounted: on a. drive shaft 31, which is. provided with. abelt wheel32,.which may-be rotated-by any iisuitable power.

Thellower-end .of thetubular-shaft, 20 is provided with a bearing. member 33, andthe upper ,endwitha bearing. member. 34. Said bearings 33land-34..aredesigned to rotatively and slidably .support a=packer..shaft.35, which.;is provided at itslowertend 'with. a=packer head 36 and a core member 3'7. Said-packer headand-core member .aredesigned. to move vertically in a cylindrical .lform 38 oflarger diameter than the core 37, so that. an. annular :space 394s provided between the more 37. and theinnerwalls of the form 38, the width of which .isiequal to the thickness of the pipe-to bemadet-herein.

Theipipe is formed by introducing plastic cement. or.- concrete-in the upperend of the form 38 at'the time the core 37 is at its lower limit. of .movement, .then rotating the core 3'7 and the packerv 36, and at the. same time. elevating the .same.

For elevating the packer shaft,..we have provided acam shaft 40 mounted in suitable bearings on the frame members 12. Said shaft 40 is rotated bymeans of. aworm gear. 41secured to its central portion and mounted in a suitable casing .42. The bottomof the casing: 42 is provided with a worm i3..in.mesh with the gear iland mountedv on aldrivejshaft 44. Said drive shaft .iihas. a sprocket whee1..4=5 driven by means of a chain .46 from the sprocket 47 mounted on the shaft .31.

. Each end .ofthe shaft. .40 is provided with a .cam..48. .Adjacenttothe .outerside of each of the cams 48 is a lever; 49.having its-rear end pivotally connected .to. ashaft. 50 -mounted in suitable brackets 51. secured tothe rear, end-of themembers .12. .The central, portion of. each of. the levers;..49. is. provided. with a stub .shaft 52 providedwitharoller 53.designed to engage the .under surface .of the cams .48. .The free end of each of thelevers 49.is provided with a sprocket The upper bearing block.15 is, provided with a bular member 20, and connected to what we shall term a tappet block support 60. Said support 60 is slidably mounted on the tubular shaft 20 and provided at its rear side with a cross head 61 slidably mounted in vertical guides 62 *supthe equal strain will always be imparted to the ported by the frame members 14. The cross head 61 is connectedtothe block 60 by means of a suitablepin 63. The upper face of the block 60 is provided with a circular recess 64 in which is rotativelymounted a' bearing member 65. a

Fixed to thepackershaft 35 is a tappet block 66, preferably formed of two piecessecured together by suitable bolt 67 in such manner that the blocks will rigidly clamp the shaft. One of the blocks is provided with a key 68 to prevent rotation of the block about said shaft. Each member of the block 66 is provided with an outwardly projecting portion 69 provided with'a roller pin 70 Said members 69 and the pins 70 are designed to project through longitudinal slots :71 in the tubular shaft 20, said slotsbeing of a length equal to the amount of longitudinal moveextending through the center of the shaft 35.

worm 43.

I By this'construction any tendency toward lateral movement between the contacting edges of the slots 71 and said rollers will be eliminated as rotary power is appliedto the cylinder shaft. Thus means is provided whereby the shaft 35 will be rotated when in any of its elevated or lowered positions, and provides means whereby the friction between the shafts 20 and 35 will be eliminated as the shaft 35 nally of the shaft 20;

a is moved longitudi- Theouter endsof the pins '70 are mounted in bearings '73 carried by. the bearing member 65.

By this arrangement the shaft 35 is elevated and lowered by means ofthe bearing 65, which in turn is elevated and lowered by the bldck 60 and the chains 59. a

Thepractical operation of our device is as Assuming that the packer head 36 and the core 37 are mounted in the form 38 and are at their lower limit of movement, then the sprockets 54 will be at their upper limits of movement, in The shaft 31 is The shaft 20 will ,then be rotated by means of the bevel .gears22 and 24 and the shaft 40 will be rotated by means of the worm gear 41 and the endsof the levers 49to move downwardly, causing the depending endsof the chains 59 to be elevated and with them the tappet supporting block 60, which in turn will cause" the packer shaft 35 to be elevated by means of the tappet block 66.

By this arrangement it win be seen that the elevatmg'speed of the packersh'aft may be varied Said chains are de signed to pass under the sprockets 54 and thence over the sprockets 18, having their free ends de-" pending adjacent to the opposite sides of thetu The cams 48 will then cause the free well as the tappet supporting block, provides the necessary power for the downward movement, and at the same time for elevating the freeends of the levers 49, so that the rollers 53 are always in contact with the periphery of the cams 48.

The equalizing bar 58 provides means whereby chains 59, and'whereby the same lifting strain will always be imparted to each side of the tappet blocksupport 60 to cause the said block to slide readily on the shaft 20 without binding. a

"The sprockets 18 are so locatedthat the de-* pending ends of the chains 59 are parallel with the shaft 35, thereby eliminating any tendency for lateral movement of the tappet block support relative to the shaft:20.

- The said tappet block support isheld against rotary movement about theshaft 20 by the cross head 61, which operates and guides parallel with the shaft 35. By this arrangement the central portion of the tubular shaft 20 is supported 'the friction caused by the power being trans mitted from the rotating tubular shaft' to the slidably mounted power shaft is greatly reduced, and whereby the wear on said parts will be reduced.

It will be seenthat wehave provided improved means for elevating and lowering the packer shaft,

whereby the movement of the lifting force is always maintained in the longitudinal axisof said shaft, thereby permitting free up and down movement of said shaft.

We claim as our invention:

.1. In a device of the class described, a support, a vertical tubular shaft rotatively mounted therein having oppositely arranged longitudinal slots, a packer shaft slidably mounted axially in said tubular shaft, a tappet block rigidly secured to said shaft,- said block having rollers for engaging one edge of each of said slots, the contact "fsurfacesof said rollers and slots'being in a plane projecting through the axis of said shaft, means for. moving said tappet block longitudinally of said tubular shaft, and means for rotating said tubular shaft. a a V a 7 2. In a device of .theclass described, a supporthaving guides,a vertical tubular shaft rotatively mounted therein having oppositelyarranged longitudinal slots, a packer shaft slidably mounted axially in said tubular shaft, a tappet block rigid- 1y secured to saidpacker shaft, said block having". rollers for engaging one edge of each of said slots, the contact surfaces of said rollers and slots being in a plane projecting through the axis of said shaft, 2. tappet block support slidably mounted on said guides, means for elevating and loweringfi w said tappet block, and means for rotating said tubular shaft.

3. In a device of the class described, a support having guides, a vertical tubular shaft rotatively mounted therein having oppositely arranged longitudinal slots, a packer shaft slidably mounted axially in said tubular shaft, a tappet block rigidly secured to said packer shaft, said block having rollers for engaging one edge of each of said slots, a tappet block support slidably mounted on said guides, means for elevating and lowering said tappet block at variable speeds, and means for rotating said tubular shaft at a constant speed.

4. In a device of the class described, a support having guides, a vertical tubular shaft rotatively mounted therein having oppositely arranged longitudinal slots, a packer shaft slidably mounted axially in said tubular shaft, a tappet block rigidly secured to said packer shaft, said block having rollers for engaging one edge of each of said slots, a tappet block support slidably mounted on said guides, means for elevating and lowering said tappet block at variable speeds, means for rotating said tubular shaft at a constant speed, and means for varying the speed ratio of the last two said means.

5. In a device of the class described, a'support having guides, a vertical tubular shaft rot-atively mounted therein having oppositely arranged longitudinal slots, a packer shaft slidably mounted axially in said tubular shaft, a tappet block rigidly secured to said packer shaft, said block having rollers for engaging one edge of each of said slots, a tappet block support slidably mounted on said guides, means for elevating and lowering said tappet block, said means comprising a cam shaft, means for rotating said shaft, a pair of similar cams on said shaft, a lever operated by each of said cams, a sprocket wheel carried by the movable end of each of said levers, a pair of sprocket wheels on the upper end of said support, a pivoted equalizing bar, a chain connected to each end of said equalizing bar and passing under corresponding sprockets of said levers and over the corresponding sprockets of said support, and having its ends depending and connected to said tappet block support at diametrically opposite points.

6. In a device of the class described, a support having vertical guides and upper and lower bearing blocks, a tubular shaft having its ends rotatively mounted in said bearings, said tubular shaft having longitudinal and opposite slots, a packer shaft slidably mounted axially within said tubular shaft, a tappet block secured to said packer shaft having roller pins projecting through said slots, a roller on each pin designed to engage one edge of a corresponding slot, a tappet block support slidably mounted on said tubular shaft and in said guides, means for applying lifting force to said tappet block support to move the tappet block support longitudinally of said tubular shaft, and means for rotating said tubular shaft.

7. In a device of the class described, a support having vertical guides and upper and lower bearing blocks, a tubular shaft having its ends rotatively mounted in said bearings, said tubular shaft having longitudinal and opposite slots, a packer shaft slidably mounted axially within said tubular shaft, a tappet block secured to said packer shaft having roller pins projecting through said slots, a roller on each pin designed to engage one edge of a corresponding slot, a

tappet block support slidably mounted on said tubular shaft and in said guides, means for lifting said tappet block support, and means for rotating said tubular support.

8. In a device of the class described, a support having vertical guides and upper and lower bearing blocks, a tubular shaft having its ends rotatively mounted in said bearings, said tubular shaft having longitudinal and opposite slots, a packer shaft slidably mounted axially therein, a tappet block fixed to said packer shaft having roller pins projecting through said slots, a roller on each pin having its periphery in engagement with one edge of acorresponding slot, the contact surface of said rollers and said slots being in a plane projecting through the axis of said packer shaft, means for lifting said tappet block, and means for rotating said tubular shaft.

9. In a device of the class described, a tubular driving shaft, having a longitudinal slot, a driven shaft slidably mounted axially therein, a tappet block secured to'said shaft having a roller pin projecting through said slot, a roller on said pin designed to engage one edge of said slot, the contact surface of said roller and said slot being in a plane projecting through the longitudinal center of said shaft, means'for lifting said tappet block support, and means for rotating said tubular shaft.

10. In a device of the class described, a tubular driving shaft, having a longitudinal slot, a driven shaft slidably mounted axially therein, a tappet block secured to said shaft having a roller pin projecting through said slot, a roller on said pin designed to engage one edge of said slot, the contact surfaces of said roller and said slot being in a plane projecting through the longitudinal center of said shaft.

11. In a device of the class described, a support having vertical guides, a tappet block slidably mounted in said guides, a packer shaft carried by said tappet block, means for rotating said tappet block, means for elevating and lowering said tappet block, the last means comprising a cam shaft, means for rotating said shaft, a pair of similar cams on said shaft, a lever operated by each of said earns, a sprocket wheel carried by the movable end of each of said levers, a pair of sprocket wheels on the upper end of said support, a pivotally supported equalizing bar, a chain for each corresponding set of sprockets passing under the sprockets of said levers and over the corresponding sprockets of said support, said chains having their free ends depending from the last sprockets and connected to said tappet block at diametrically opposite points.

12. In a device of the class described, a vertical packer shaft, a tappet block for supporting said shaft, means for rotating said shaft, means for elevating and lowering said tappet block, said means comprising a cam shaft, means for rotating said shaft, a pair of similar cams on said shaft, a lever operated by each of said earns, a sprocket wheel carried by the movable end of each of said levers, a pair of sprocket wheels on the upper end of said support, a pivoted equalizing bar, a chain connected to each end of said equalizing bar and passing under corresponding sprockets of said levers and over the corresponding sprockets of said support, and having its ends depending and connected to said tappet block at diametrically opposite points.

CHARLES C. QUINN. HARLEY EDGERTON. 

